openfoam/applications/test/POSIX/Test-POSIX.C
Mark Olesen 77338c8bd0 ENH: reduce overhead for clockTime, cpuTime
- clockValue class for managing the clock values only, with a null
  constructor that does not query the system clock (can defer to later).
  Can also be used directly for +/- operations.

- refactor clockTime, cpuTime, clock to reduce storage.
2018-03-15 10:01:51 +01:00

106 lines
2.9 KiB
C

/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Description
\*---------------------------------------------------------------------------*/
#include "OSspecific.H"
#include "clock.H"
#include "clockTime.H"
#include "cpuTime.H"
using namespace Foam;
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Main program:
int main(int argc, char *argv[])
{
Info<<"rmDir" << nl;
rmDir("hmm");
{
Foam::clock sysClock();
Info<< "clock: date " << clock::date() << nl
<< "clock: time " << clock::clockTime() << nl
<< "clock: iso " << clock::dateTime() << nl;
}
{
clockValue a;
Info<< "clockValue() " << a << nl;
a.update();
Info<< "updated " << a << nl;
Info<< "sleep 4..." << endl;
sleep(4);
a.update();
Info<< " = " << a.seconds() << nl;
Info<< "sleep 2..." << endl;
sleep(2);
Info<< "elapsed = " << a.elapsed() << nl;
Info<< "elapsed = " << a.elapsed().seconds() << nl;
clockValue b = clockValue::now();
Info<< "(" << b << " - " << a << ") = " << (b - a) << nl;
Info<< "(" << b << " + " << a << ") = " << (b + a) << nl;
}
{
clockTime clk;
Info<< "starting clockTime" << nl;
Info<< "sleep 4..." << endl;
sleep(4);
Info<< "increment = " << clk.timeIncrement() << nl;
Info<< "elapsed = " << clk.elapsedTime() << nl;
Info<< "sleep 4..." << endl;
sleep(4);
Info<< "increment = " << clk.timeIncrement() << nl;
Info<< "elapsed = " << clk.elapsedTime() << nl;
Info<< "sleep 2..." << endl;
sleep(2);
Info<< "elapsed = " << clk.elapsedTime() << nl;
Info<< "increment = " << clk.timeIncrement() << nl;
}
Info<< "End\n" << endl;
return 0;
}
// ************************************************************************* //